For a concrete porch, scrub it thoroughly with a scrub brush, water, and a concrete cleaning chemical. Be sure to wear the appropriate protective gear to avoid dangerous contact with the chemical. [4] X Research source Since wood is a porous surface, you want to wait for your porch to dry completely before attempting to paint. It can take up to 24 hours, especially in humid climates. [5] X Research source
Wear a respirator when operating the sander to protect your lungs from debris. When you’re done sanding, clean up the dust and sand with a broom or vacuum so the porch is clean and smooth.
Use caution and a moderate amount of paint when painting near the taped areas so as not to get the paint underneath the tape.
Use a stiff-bristled brush to scrub the Muriatic acid solution onto the porch. Let the acid sit on the concrete until it stops bubbling. [10] X Research source Muriatic acid can cause severe burns and lung damage. Make sure you wear goggles, rubber gloves and boots, and read the safety instructions thoroughly before using this chemical.
The finished etching should give the concrete the texture of #1 or #2 sandpaper.
Use a paint brush to prime cracks or tight spaces. Watch out for falling leaves or bugs that could stick to the wet primer. Primer helps the paint stick to the surface of your porch.
Paint made specifically for floors or porches will stand up better to wear and tear than other paints. [14] X Research source Some paint designed for porches contains grit for added traction. Make sure you choose a paint that’s tailored to either wood or concrete. Dark colors generally hide chips and stains easier than light-colored paint. Consider what kind of use your porch will get when choosing a color. Use darker colors of heavy-use areas.
This will also protect your concrete porch from sun damage.
